OT/ICS Security
Purpose-built assurance for operational technology and industrial control systems — mapped to IEC 62443 and complementing existing OT monitoring with structured governance.
The IT/OT Convergence Challenge
Operational technology environments are increasingly connected to enterprise IT networks, yet the governance and assurance tooling available to OT teams remains fundamentally inadequate. IT-centric GRC platforms cannot model zones, conduits, security levels, or the safety considerations that are inseparable from OT operations.
The result is a governance gap: OT environments are either assessed using IT-centric tools that miss critical operational context, or they sit outside formal governance entirely — invisible to boards and regulators.
C-PAP addresses this by providing a governance layer purpose-built for OT environments. It complements operational monitoring tools (SIEM, IDS, asset discovery) with the structured assurance and evidence model that OT has historically lacked.
OT Governance Gaps
- IT-centric GRC tools cannot model zones, conduits, or security levels
- Safety and security treated as separate disciplines with no shared governance
- Evidence types differ fundamentally from IT (engineering drawings, configuration baselines, site surveys)
- No structured maturity model for OT security governance
- Regulatory frameworks (NIS, NCSC CAF) apply but lack OT-specific implementation guidance
- Board reporting on OT risk is either absent or bolted onto IT dashboards
Anchor Standard: IEC 62443
C-PAP's OT security operating context is anchored to IEC 62443, the international standard series for industrial automation and control system security. The CCM maps to IEC 62443 across all relevant parts — from general concepts and policies (Part 1) through system-level requirements (Part 3) to component-level specifications (Part 4).
This includes full support for zone and conduit modelling, security level targeting (SL-T), and the risk assessment methodology defined in IEC 62443-3-2 — capabilities that no conventional GRC tool provides.
Supporting Frameworks
Each framework is mapped to the CCM at individual control level, enabling organisations operating OT environments to produce compliance evidence for multiple regulatory obligations from a single assessment.
D14 — OT/ICS Security Overlay
Beyond the thirteen mandatory CCM domains, C-PAP provides a dedicated OT/ICS Security overlay domain (D14) containing 24 purpose-built controls for operational technology environments.
These controls address the specific governance, engineering, and operational requirements that distinguish OT security from IT security — including zone and conduit architecture, safety instrumented system governance, process control network segmentation, and industrial protocol management.
D14 is activated when an organisation operates in OT mode or converged mode. It integrates seamlessly with the mandatory baseline, ensuring that OT-specific controls are assessed within the same maturity model and evidence framework as the rest of the CCM.
D14 Control Areas
- Zone and conduit architecture governance
- Security level targeting and verification
- Safety instrumented system (SIS) governance
- Process control network segmentation
- Industrial protocol security
- OT asset lifecycle management
- OT-specific incident response
- Engineering workstation management
- Remote access to OT environments
- OT backup and recovery
Safety-Security Integration
In operational technology environments, security cannot be treated in isolation from safety. A control change that improves security posture but compromises safety is not an acceptable outcome. C-PAP's OT operating context explicitly models the relationship between safety and security, ensuring that assurance activities consider both dimensions.
The CCM's evidence model is adapted for OT evidence types: engineering drawings, P&IDs, network architecture diagrams, configuration baselines, site survey records, and commissioning documentation. These evidence artefacts are managed with the same lifecycle governance as IT evidence, but with OT-appropriate metadata and classification.
Capability Level 2 — Domain Compliance (OT Mode)
The OT security operating context aligns to C-PAP Capability Level 2 in OT mode. This provides organisations with a dual-framework compliance capability, combining the thirteen mandatory CCM domains with the D14 OT/ICS Security overlay.
Organisations operating at Level 2 gain structured OT governance that extends beyond point-in-time audits to provide continuous assurance visibility. For organisations that need to extend into converged IT/OT assurance, the transition to Level 3 is additive — existing controls, evidence, and assessments carry forward.
Relevant Sectors
OT/ICS security assurance is particularly relevant for organisations operating in sectors with significant operational technology environments:
Bring Governance to Your OT Environment
Request a sector-specific briefing to see how C-PAP addresses OT/ICS security assurance in your operational context.